Elastic Strip Clip Type Fastening Ballasted Track Rail Fastenings
- Category： Track accessories
- Model: I, II, III
- Applicable rails: 50kg/m, 60kg/m
- Speed: <250km/h
- Track gauge: 1435mm or customized
Elastic Strip Clip Type Fastening Ballasted Track Rail Fastenings
1. Brief introduction:
Rail fasteners are critical components that connect steel rails to supporting structures. Through these fasteners, the steel rails are firmly secured to sleepers or base plates.
The three mainstream rail fastener systems in China's railway network are the WJ Series (for high-speed ballastless tracks), the Elastic Strip Series (for conventional-speed/ballasted tracks), and the DT/FC Series (for urban rail transit). Their core differences lie in shoulder design, clamping force, and elasticity configuration, which enable them to be adapted to different speed levels, axle loads, and track foundation types.
2. Main Functions of Rail Fasteners:
Maintain and adjust the track gauge and alignment.
Provide longitudinal resistance to prevent rail creep and excessive gap opening in case of rail fracture.
Supply elasticity to reduce vibrations and shocks.
Enhance the rigidity of the track frame to prevent track buckling.
Ensure track insulation for the normal operation of the track circuit.
Possess a certain capacity for vertical adjustment of steel rails.
3. Main fastening systems for ballasted tracks：
|
Fastening model |
Structure type |
Key parameters |
Application |
|
Elastic Strip Type Ⅰ |
Shouldered Non-separated Elastic Type |
Clamping force: approx. 8 kN; Height adjustment range: 3-6 mm |
50/60 kg/m steel rails, conventional speed main lines |
|
Elastic Strip Type Ⅱ |
Shouldered Non-separated Elastic Type |
Clamping force: approx. 10 kN; Height adjustment range: 10 mm |
60 kg/m steel rails, CWR (Continuous Welded Rail) tracks |
|
Elastic Strip Type Ⅲ |
Shoulderless Boltless Type |
Clamping force: ≥ 13 kN; Gauge positioning via insulated gauge blocks |
50kg/m or 60 kg/m steel rails, monolithic track bed，no more than 160km/h ballasted tracks |
|
Elastic Strip Type Ⅳ |
Shoulderless Non-separated Elastic Type |
Lateral force bearing by pre-embedded iron seats250 km/h ballasted tracks / elastic bearing block ballastless tracks |
250 km/h ballasted tracks / elastic bearing block ballastless tracks |
|
Elastic Strip Type Ⅴ |
Shouldered Non-separated Elastic Type |
Compatible with Type Ⅲa/Ⅲc sleepers 250 km/h ballasted tracks |
250 km/h ballasted tracks |
4. Detail structure:
4.1 Type I Clip Type Fastening system
4.2 Type II Clip Fastening System:
